Press machine for mounting motor bearing

Abstract

The invention relates to the field of press machines, and discloses a press machine for mounting a motor bearing, which comprises a bearing mounting frame and a press machine body, the press body is arranged on the rear side of the upper surface of the bearing mounting frame; the auxiliary positioning mechanism is arranged on the upper surface of the bearing mounting frame, and the auxiliary positioning mechanism is used for fixing and limiting the motor rotating shaft before the bearing is mounted on the motor rotating shaft to be mounted and triggering the motor rotating shaft to rotate to smear the lubricating liquid at the same time. The absolute stability of the rotating shaft is ensured in the process of fixing and limiting the rotating shaft of the motor, and meanwhile, the pre-coated uniform lubricating layer can remarkably reduce the frictional resistance and heat generation when the bearing is pressed in, reduce the damage risk of a matching surface, ensure that the bearing can be stably and accurately pressed in a preset position, and improve the working efficiency. Therefore, high-efficiency, high-quality and low-damage bearing installation is realized.

Description

Technical Field

[0001] The present invention relates to the field of presses, and particularly to a press for installing motor bearings. Background Art

[0002] As an indispensable power source in modern industry and daily life, the performance, lifespan, and reliability of motors are of utmost importance. Among the numerous core components of a motor, the bearing plays a crucial role. It is responsible for supporting the rotation of the rotor, reducing friction, and ensuring the smooth and efficient operation of the motor. The installation quality of the bearing directly affects the overall performance and service life of the motor. Therefore, the installation of the bearing is a process that requires precise control.

[0003] According to the Chinese authorized patent publication number: CN113146193B, a press for bearing installation is disclosed, which includes a press base body, and further includes: a lower pressing ring installed on the upper pressing plate of the press base body, a bottom plate installed on the lower pressing plate, a base slidably connected to the bottom plate, and a plurality of nitrogen springs for supporting the base are provided inside the press base body. A positioning member for positioning the bearing and the component to be installed is provided on the base. This press for bearing installation, by setting a positioning member on the traditional press, positions the bearing through a positioning ring and balls, and when the press is working, before the bearing contacts the component to be installed, the axis of the bearing is automatically aligned with the axis of the component to be installed through the positioning rod on the positioning cylinder, and then the installation is carried out. This method automatically adjusts the axis installation of the two, can reduce the problem of wear caused by assembly, and improve the qualified rate of products. However, this press still has deficiencies. During the installation process of the motor bearing, this press uses a simple fixture to fix the motor shaft. After the motor shaft is fixed, lubricating fluid needs to be manually applied. Manual application is difficult to ensure the uniformity and integrity of the coverage of the lubricating grease. Since both the shaft fixation and lubrication require manual intervention, the entire bearing installation process is not fully automated. This not only affects the efficiency, but also requires the operator to have certain skills and has a relatively high labor intensity. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a press for installing motor bearings, which solves the above problems.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A press for installing motor bearings, comprising: A bearing installation frame; A press body; the press body is arranged at the rear side of the upper surface of the bearing installation frame; Auxiliary positioning mechanism; the auxiliary positioning mechanism is arranged on the upper surface of the bearing mounting frame. The auxiliary positioning mechanism is used to fixedly limit the motor shaft before installing the bearing on the motor shaft to be installed and trigger the motor shaft to rotate and apply lubricating fluid at the same time. The auxiliary positioning mechanism includes a fixed bracket, a fixed plate, a stepping motor, a left threaded screw, a right threaded screw, a connecting rod, a moving drive block, an arc-shaped clamping ring, a linkage arm, a shaft drive rack and a lubricating fluid cylinder. After inserting the lower end of the motor shaft to be installed into the hole groove of the pressure table, the stepping motor starts, and its output end drives the left threaded screw to rotate. The left threaded screw and the right threaded screw are connected by a connecting rod. The rotation of the left threaded screw will drive the right threaded screw to rotate synchronously through the connecting rod. When the left threaded screw and the right threaded screw rotate, due to the effect of the thread, the two moving drive blocks will approach each other along the axis of the screw. As the moving drive blocks approach each other, the arc-shaped clamping rings fixedly connected to their upper surfaces also approach each other. When the inner working surface of the arc-shaped clamping ring contacts the outer circumferential surface of the motor shaft, the arc-shaped clamping ring will generate a radial clamping force on the motor shaft. In this process, since the shaft drive rack is located on the front upper side of the arc-shaped clamping ring, the first to contact the motor shaft to be installed is the shaft drive rack. That is, in the previous stage before the arc-shaped clamping ring fixes the motor shaft to be installed, the shaft drive rack drives the motor shaft to rotate by the friction force with the outer circumferential surface of the motor shaft and in an alternating force application manner. While the motor shaft is forced to rotate, the upper liquid balls located below the shaft drive rack start to work. The balls roll as the shaft rotates, and the lubricating fluid pre-applied on the balls or nearby areas is evenly applied to the outer circumferential surface of the shaft by means of friction and rolling, especially in the mating area where the bearing is about to be installed. In this way, during the process of pressing the bearing ring onto the motor shaft, by means of fixedly limiting the motor shaft, the absolute stability of the shaft is ensured. At the same time, the pre-applied uniform lubricating layer can significantly reduce the frictional resistance and heat generation during bearing pressing, reduce the risk of damage to the mating surface, and ensure that the bearing can be smoothly and accurately pressed into the predetermined position, thus realizing high-efficiency, high-quality and low-damage bearing installation; Linkage protection mechanism; the linkage protection mechanism is arranged on the front lower side of the pressure body. The linkage protection mechanism is used to trigger the flipping of the flipping protection plate during the downward pressing and installation of the bearing ring.

[0006] Preferably, the number of the fixed brackets is set to two. The two fixed brackets are respectively arranged on the left and right sides of the upper surface of the bearing mounting frame. Fixed plates are fixedly connected to the outer sides of the upper surfaces of the two fixed brackets. The left threaded screw and the right threaded screw are respectively rotatably connected to the inner sides of the left and right fixed plates. The ends of the left threaded screw and the right threaded screw far from the corresponding fixed plates are fixedly connected with a connecting rod. The outer surfaces of the left threaded screw and the right threaded screw are both threadedly connected with moving drive blocks. The two moving drive blocks are symmetrically arranged. Connecting arms are fixedly connected to the upper surfaces of the two moving drive blocks.

[0007] Preferably, the two ends of the two connecting arms away from the corresponding displacement driving blocks are respectively arranged on the left and right sides of the upper surface of the pressure table. The lower end of the pressure table is fixedly connected to the upper surface of the bearing mounting frame. Linkage arms are arranged on the outer sides of the two connecting arms at one end located on the pressure table. Rotating shaft driving racks are arranged on the inner sides of the two linkage arms. Two fixing rods are fixedly connected between the rotating shaft driving rack and the linkage arm. An arc-shaped snap ring is fixedly connected to one end of the two connecting arms located on the pressure table. The rotating shaft driving rack is arranged on the front upper side of the arc-shaped snap ring.

[0008] Preferably, two lubricating fluid cylinders are fixedly connected to the upper surfaces of the two rotating shaft driving racks. Upper liquid balls are embedded in the inner sides of the lubricating fluid cylinders. An oil filling plug is threadedly connected to the upper surface of each lubricating fluid cylinder.

[0009] Preferably, limiting slide rails are fixedly connected to the upper surfaces of the two fixing brackets. Displacement driving blocks are slidably connected to the upper surfaces of the limiting slide rails. A stepping motor is fixedly connected to the outside of the left fixing bracket. The output end of the stepping motor is in transmission connection with the left threaded lead screw.

[0010] Preferably, the linkage protection mechanism includes a movable arm, a connecting slider, a connecting slide rail, a flipping protection plate, a connecting frame, a rotating shaft, an extending arm and a limiting shaft. The rear end of the movable arm is rotatably connected to the front side of the bearing pressing ring. The front end of the movable arm is rotatably connected to the upper surface of the connecting slider. The lower end of the connecting slider is slidably connected to the upper surface of the connecting slide rail. The lower end of the connecting slide rail is fixedly connected to the upper surface of the flipping protection plate.

[0011] Preferably, the front end of the flipping protection plate is fixedly connected to the rear side of the rotating shaft. The left and right ends of the rotating shaft are rotatably connected to the left and right sides inside the connecting frame. And a torsion spring is arranged at the rotating connection of the rotating shaft and the connecting frame. The connecting frame is fixedly connected to the front side of the pressure table.

[0012] Preferably, extending arms are fixedly connected to the left and right ends at the rear side of the connecting frame. A limiting shaft is rotatably connected between the two extending arms. The limiting shaft horizontally penetrates through the middle of the movable arm.

[0013] Preferably, a hole groove is arranged in the middle of the upper surface of the pressure table. A motor rotating shaft to be installed is arranged inside the hole groove. A bearing ring is arranged on the upper surface of the motor rotating shaft to be installed.

[0014] Preferably, a hydraulic rod is arranged on the lower surface of the pressure body. The fixed end of the hydraulic rod is fixedly connected to the pressure body. The free end of the hydraulic rod is fixedly connected to a bearing pressing ring.

[0015] The present invention provides a press for installing motor bearings. Compared with the prior art, the following beneficial effects are achieved: In the present invention, through the provided auxiliary positioning mechanism, after the lower end of the motor shaft to be installed is inserted into the hole groove of the pressure table, the stepping motor starts, and its output end drives the left threaded lead screw to rotate. The left threaded lead screw and the right threaded lead screw are connected by a connecting rod. The rotation of the left threaded lead screw will drive the right threaded lead screw to rotate synchronously through the connecting rod. When the left threaded lead screw and the right threaded lead screw rotate, due to the effect of the threads, the two displacement driving blocks will approach each other along the axis of the lead screw. As the displacement driving blocks approach each other, the arc-shaped clamping rings fixedly connected to their upper surfaces also approach each other. When the inner working surfaces of the arc-shaped clamping rings contact the outer circumferential surface of the motor shaft, the arc-shaped clamping rings will generate a radial clamping force on the motor shaft. In this process, since the shaft driving rack is located on the upper front side of the arc-shaped clamping ring, the first to contact the motor shaft to be installed is the shaft driving rack. That is, in the previous stage before the arc-shaped clamping ring fixes the motor shaft to be installed, the shaft driving rack drives the motor shaft to rotate by means of the frictional force with the outer circumferential surface of the motor shaft and in an alternating force application manner. While the motor shaft is forced to rotate, the upper liquid balls located below the shaft driving rack start to work. The balls roll as the shaft rotates, and the lubricating liquid pre-applied to the balls or the nearby area is evenly applied to the outer circumferential surface of the shaft through friction and rolling, especially in the mating area where the bearing is about to be installed. In this way, during the process of pressing the bearing ring onto the motor shaft, by means of the process of fixing and limiting the motor shaft, the absolute stability of the shaft is ensured. At the same time, the pre-applied uniform lubricating layer can significantly reduce the frictional resistance and heat generation during the bearing pressing, reduce the risk of damage to the mating surface, and ensure that the bearing can be smoothly and accurately pressed into the predetermined position, thereby realizing high-efficiency, high-quality, and low-damage bearing installation; 2. In the present invention, through the linkage protection mechanism, when the operator starts the press, the hydraulic rod begins to extend downward, driving the bearing pressure ring to move downward to prepare for press-fitting the bearing ring. As the bearing pressure ring moves downward, the rear end of the movable arm connected to its front side also moves downward accordingly. The downward movement of the rear end of the movable arm will drive its front end to swing downward. Since the lower end of the connecting slider is slidably connected to the upper surface of the connecting slide rail, and the connecting slide rail itself is fixed to the upper surface of the flip protection plate, the connecting slider cannot move downward and can only slide forward along the slide rail. Under the thrust of the movable arm, the flip protection plate overcomes the resistance of the torsion spring and flips backward around the flip axis. During the flipping process, the plate surface of the flip protection plate will move to the front of the bearing press-fitting area. A physical barrier is formed, which just blocks the path where the operator may reach into the front of the hole groove of the pressure platform, ensuring that the operator cannot put his hand in. At the most dangerous moment when the bearing ring is pressed, the flip protection plate automatically rises to form a physical barrier, which completely eliminates the possibility that the operator puts his hand into the narrow dangerous area between the pressure ring and the bearing ring due to distraction, habit or misoperation. When the bearing ring is installed in place, the operator controls the hydraulic rod to rise, and the bearing pressure ring is lifted accordingly. The rear end of the movable arm is lifted as the pressure ring rises, driving the front end to swing upward, driving the connecting slider to slide forward along the slide rail, and the forward sliding of the connecting slider pulls the flip protection plate to flip forward around the flip axis and return to the initial position, ready for the next press. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of a press machine for installing motor bearings proposed by the present invention; Figure 2 A schematic structural diagram of a press machine for installing motor bearings proposed by the present invention from an oblique upper perspective; Figure 3 This is a schematic diagram of the rear three-dimensional structure of a press machine for installing motor bearings proposed by the present invention; Figure 4 This is a schematic structural diagram of the upper portion of a press for installing a motor bearing proposed by the present invention; Figure 5 This is a structural schematic diagram of an auxiliary positioning mechanism in a press for installing a motor bearing proposed by the present invention; Figure 6 A press for installing a motor bearing proposed by the present invention Figure 4 A magnified view of middle; Figure 7 This is a structural schematic diagram of a linkage protection mechanism in a press for installing a motor bearing proposed by the present invention; Figure 8 The present invention is a schematic structural diagram of a linkage arm in a press for installing a motor bearing.

[0017] Legend: 1. Bearing mounting bracket; 2. Pressure body; 3. Auxiliary positioning mechanism; 301. Fixed bracket; 302. Fixed plate; 303. Stepper motor; 304. Left threaded lead screw; 305. Right threaded lead screw; 306. Connecting rod; 307. Limit slide rail; 308. Opposite movement drive block; 309. Connecting arm; 310. Arc-shaped clamping ring; 311. Linkage arm; 312. Fixed rod; 313. Rotating shaft drive rack; 314. Lubricating fluid cylinder; 315. Upper liquid ball; 316. Filler plug; 4. Linkage protection mechanism; 401. Movable arm; 402. Connecting slider; 403. Connecting slide rail; 404. Flipping protection plate; 405. Connecting frame; 406. Flipping shaft; 407. Extended arm; 408. Limit shaft; 5. Hydraulic rod; 6. Bearing pressure ring; 7. Motor rotating shaft to be installed; 8. Bearing ring; 9. Pressure table. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-8 , the present invention provides two technical solutions, specifically including the following embodiments: Embodiment 1: A press for installing a motor bearing, comprising: a bearing mounting frame 1, a press body 2, and an auxiliary positioning mechanism 3; the press body 2 is arranged at the rear side of the upper surface of the bearing mounting frame 1; the auxiliary positioning mechanism 3 is arranged on the upper surface of the bearing mounting frame 1, and the auxiliary positioning mechanism 3 is used for fixedly limiting the motor shaft before installing the bearing on the motor shaft 7 to be installed and triggering the rotation of the motor shaft to apply lubricating fluid. The auxiliary positioning mechanism 3 includes a fixed bracket 301, a fixed plate 302, a stepping motor 303, a left threaded lead screw 304, a right threaded lead screw 305, a connecting rod 306, a moving drive block 308, an arc-shaped clamping ring 310, a linkage arm 311, a shaft drive rack 313, and a lubricating fluid cylinder 314; the number of fixed brackets 301 is set to two, and the two fixed brackets 301 are respectively arranged on the left and right sides of the upper surface of the bearing mounting frame 1. Fixed plates 302 are fixedly connected to the outer sides of the upper surfaces of the two fixed brackets 301. A left threaded lead screw 304 and a right threaded lead screw 305 are respectively rotatably connected to the inner sides of the left and right fixed plates 302. The ends of the left threaded lead screw 304 and the right threaded lead screw 305 far from the corresponding fixed plates 302 are fixedly connected with a connecting rod 306. Moving drive blocks 308 are threadedly connected to the outer surfaces of the left threaded lead screw 304 and the right threaded lead screw 305. The two moving drive blocks 308 are symmetrically arranged. Connecting arms 309 are fixedly connected to the upper surfaces of the two moving drive blocks 308. The ends of the two connecting arms 309 far from the corresponding moving drive blocks 308 are respectively arranged on the left and right sides of the upper surface of the pressure table 9. The lower end of the pressure table 9 is fixedly connected to the upper surface of the bearing mounting frame 1. Linkage arms 311 are arranged outside the ends of the two connecting arms 309 located on the pressure table 9. Shaft drive racks 313 are arranged inside the two linkage arms 311. Two fixed rods 312 are fixedly connected between the shaft drive rack 313 and the linkage arm 311. Arc-shaped clamping rings 310 are fixedly connected to the ends of the two connecting arms 309 located on the pressure table 9. The shaft drive rack 313 is arranged on the front upper side of the arc-shaped clamping ring 310. Two lubricating fluid cylinders 314 are fixedly connected to the upper surfaces of the two shaft drive racks 313. Liquid feeding balls 315 are embedded inside the lubricating fluid cylinders 314. Filler plugs 316 are threadedly connected to the upper surfaces of each lubricating fluid cylinder 314. Limit slide rails 307 are fixedly connected to the upper surfaces of the two fixed brackets 301. The moving drive block 308 is slidably connected to the upper surface of the limit slide rail 307. A stepping motor 303 is fixedly connected to the outside of the left fixed bracket 301. The output end of the stepping motor 303 is in transmission connection with the left threaded lead screw 304.

[0020] During operation, after inserting the lower end of the motor shaft 7 to be installed into the hole slot of the pressure table 9, the stepping motor 303 is started, and its output end drives the left threaded lead screw 304 to rotate. The left threaded lead screw 304 and the right threaded lead screw 305 are connected by a connecting rod 306. The rotation of the left threaded lead screw 304 will drive the right threaded lead screw 305 to rotate synchronously through the connecting rod 306. When the left threaded lead screw 304 and the right threaded lead screw rotate, due to the effect of the threads, the two displacement driving blocks 308 will approach each other along the axis direction of the lead screw. As the displacement driving blocks 308 approach each other, the arc-shaped clamping rings 310 fixedly connected to their upper surfaces also approach each other. When the inner working surfaces of the arc-shaped clamping rings 310 come into contact with the outer circumferential surface of the motor shaft, the arc-shaped clamping rings 310 will generate a radial clamping force on the motor shaft. In this process, since the shaft driving rack 313 is located on the upper front side of the arc-shaped clamping ring 310, the shaft driving rack 313 first comes into contact with the motor shaft 7 to be installed, that is, in the previous stage before the arc-shaped clamping ring 310 fixes the motor shaft 7 to be installed, the shaft driving rack 313 drives the motor shaft to rotate by means of the frictional force with the outer circumferential surface of the motor shaft and in an alternating force application manner. While the motor shaft is forced to rotate, the upper liquid balls 315 located below the shaft driving rack 313 start to work. The balls roll as the shaft rotates, and the lubricating liquid pre-applied to the balls or the nearby area is evenly applied to the outer circumferential surface of the shaft by means of friction and rolling, especially in the mating area where the bearing is about to be installed. In this way, during the process of pressing the bearing ring 8 onto the motor shaft, by means of fixing and limiting the motor shaft, the absolute stability of the shaft is ensured. At the same time, the pre-applied uniform lubricating layer can significantly reduce the frictional resistance and heat generation during bearing pressing, reduce the risk of damage to the mating surface, and ensure that the bearing can be smoothly and accurately pressed into the predetermined position, thus achieving efficient, high-quality, and low-damage bearing installation.

[0021] Embodiment 2: The linkage protection mechanism 4 based on Embodiment 1; the linkage protection mechanism 4 is arranged on the front side below the pressure body 2, and the linkage protection mechanism 4 is used to trigger the flipping of the flipping protection plate 404 during the pressing and installation of the bearing ring 8. The linkage protection mechanism 4 includes a movable arm 401, a connecting slider 402, a connecting slide rail 403, a flipping protection plate 404, a connecting frame 405, a flipping shaft 406, an extension arm 407 and a limiting shaft 408. The rear end of the movable arm 401 is rotatably connected to the front side of the bearing pressing ring 6, and the front end of the movable arm 401 is rotatably connected to the upper surface of the connecting slider 402. The lower end of the connecting slider 402 is slidably connected to the upper surface of the connecting slide rail 403. The lower end of the connecting slide rail 403 is fixedly connected to the upper surface of the flipping protection plate 404. The front end of the flipping protection plate 404 is fixedly connected to the rear side of the flipping shaft 406. The left and right ends of the flipping shaft 406 are rotatably connected to the left and right sides inside the connecting frame 405, and a torsion spring is arranged at the rotation connection of the flipping shaft 406 and the connecting frame 405. The connecting frame 405 is fixedly connected to the front side of the pressure table 9. Both the left and right ends of the rear side of the connecting frame 405 are fixedly connected with extension arms 407. A limiting shaft 408 is rotatably connected between the two extension arms 407. The limiting shaft 408 horizontally penetrates through the middle of the movable arm 401. A hole groove is arranged in the middle of the upper surface of the pressure table 9. A motor rotating shaft 7 to be installed is arranged inside the hole groove. A bearing ring 8 is arranged on the upper surface of the motor rotating shaft 7 to be installed. A hydraulic rod 5 is arranged on the lower surface of the pressure body 2. The fixed end of the hydraulic rod 5 is fixedly connected with the pressure body 2, and the free end of the hydraulic rod 5 is fixedly connected with a bearing pressing ring 6. When the operator starts the press, the hydraulic rod 5 starts to extend downward, driving the bearing pressing ring 6 to move downward to prepare for pressing the bearing ring 8. As the bearing pressing ring 6 moves downward, the rear end of the movable arm 401 connected to its front side also moves downward accordingly. The downward movement of the rear end of the movable arm 401 will drive the front end of the movable arm 401 to swing downward. Since the lower end of the connecting slider 402 is slidably connected to the upper surface of the connecting slide rail 403, and the connecting slide rail 403 itself is fixed to the upper surface of the flipping protection plate 404, the connecting slider 402 cannot move downward and can only slide forward along the slide rail. Under the thrust of the movable arm 401, the flipping protection plate 404 overcomes the resistance of the torsion spring and flips backward around the flipping shaft 406. During the flipping process of the flipping protection plate 404, its plate surface will move to the front of the bearing pressing area to form a physical barrier, just blocking the path where the operator may reach into the front of the hole groove of the pressure table 9, ensuring that the operator cannot reach in with his hand. At the most dangerous moment when the bearing ring 8 is pressed tightly, the flipping protection plate 404 automatically rises to form a physical barrier, completely eliminating the possibility that the operator reaches into the narrow and dangerous area between the pressing ring and the bearing ring 8 due to distraction, habit or misoperation.After the bearing ring 8 is installed in place, the operator controls the hydraulic rod 5 to rise, and the bearing pressing ring 6 is lifted accordingly. The rear end of the movable arm 401 is lifted as the pressing ring rises, driving the front end to swing upward, driving the connecting slider 402 to slide forward along the slide rail. The forward sliding of the connecting slider 402 pulls the flipping protection plate 404 to flip forward around the flipping shaft 406 and return to the initial position, preparing for the next press-fitting.,

[0022] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the application shall be included in the protection scope of the present application.,

Claims

1. A press for installing a motor bearing, characterized in that: Comprising: Bearing mounting bracket (1); Pressing body (2); the pressing body (2) is arranged at the rear side of the upper surface of the bearing mounting bracket (1); Auxiliary positioning mechanism (3); the auxiliary positioning mechanism (3) is arranged on the upper surface of the bearing mounting bracket (1), and the auxiliary positioning mechanism (3) is used for fixedly limiting the motor rotating shaft before installing the bearing on the motor rotating shaft (7) to be installed and triggering the motor rotating shaft to rotate and smear lubricating fluid at the same time. The auxiliary positioning mechanism (3) includes a fixed bracket (301), a fixing plate (302), a stepping motor (303), a left threaded lead screw (304), a right threaded lead screw (305), a connecting rod (306), a moving drive block (308), an arc-shaped clamping ring (310), a linkage arm (311), a rotating shaft drive rack (313) and a lubricating fluid cylinder (314); Linkage protection mechanism (4); the linkage protection mechanism (4) is arranged at the front side below the pressing body (2), and the linkage protection mechanism (4) is used for triggering the flipping protection plate (404) to flip during the pressing and installation process of the bearing ring (8).

2. The press for installing a motor bearing according to claim 1, wherein: The number of the fixed brackets (301) is set to two. The two fixed brackets (301) are respectively arranged on the left and right sides of the upper surface of the bearing mounting bracket (1). Fixing plates (302) are fixedly connected to the outer sides of the upper surfaces of the two fixed brackets (301). A left threaded lead screw (304) and a right threaded lead screw (305) are respectively rotatably connected to the inner sides of the left and right fixing plates (302). Connecting rods (306) are fixedly connected to the ends of the left threaded lead screw (304) and the right threaded lead screw (305) far away from the corresponding fixing plates (302). Moving drive blocks (308) are threadedly connected to the outer surfaces of the left threaded lead screw (304) and the right threaded lead screw (305). The two moving drive blocks (308) are symmetrically arranged. Connecting arms (309) are fixedly connected to the upper surfaces of the two moving drive blocks (308).

3. The press for installing a motor bearing according to claim 2, wherein: The ends of the two connecting arms (309) far away from the corresponding moving drive blocks (308) are respectively arranged on the left and right sides of the upper surface of the pressure table (9). The lower end of the pressure table (9) is fixedly connected to the upper surface of the bearing mounting bracket (1). Linkage arms (311) are arranged on the outer sides of one ends of the two connecting arms (309) located on the pressure table (9). Rotating shaft drive racks (313) are arranged on the inner sides of the two linkage arms (311). Two fixing rods (312) are fixedly connected between the rotating shaft drive rack (313) and the linkage arm (311). Arc-shaped clamping rings (310) are fixedly connected to the ends of the two connecting arms (309) located on the pressure table (9). The rotating shaft drive rack (313) is arranged on the front upper side of the arc-shaped clamping ring (310).

4. A press for installing a motor bearing according to claim 3, characterized in that: Two lubricating fluid cylinders (314) are fixedly connected to the upper surfaces of the two rotating shaft drive racks (313). Upper liquid balls (315) are embedded in the inner sides of the lubricating fluid cylinders (314). Oil filling plugs (316) are threadedly connected to the upper surfaces of each lubricating fluid cylinder (314).

5. The press for installing a motor bearing according to claim 2, characterized in that: The upper surfaces of both of the two fixed brackets (301) are fixedly connected with limit slide rails (307). A displacement driving block (308) is slidably connected to the upper surface of the limit slide rail (307). A stepping motor (303) is fixedly connected to the outside of the left fixed bracket (301). The output end of the stepping motor (303) is in transmission connection with a left threaded lead screw (304).

6. The press for installing a motor bearing according to claim 1, characterized in that: The linkage protection mechanism (4) includes a movable arm (401), a connecting slider (402), a connecting slide rail (403), a flipping protection plate (404), a connecting frame (405), a flipping shaft (406), an extension arm (407) and a limit shaft (408). The rear end of the movable arm (401) is rotatably connected to the front side of a bearing retaining ring (6). The front end of the movable arm (401) is rotatably connected to the upper surface of the connecting slider (402). The lower end of the connecting slider (402) is slidably connected to the upper surface of the connecting slide rail (403). The lower end of the connecting slide rail (403) is fixedly connected to the upper surface of the flipping protection plate (404).

7. The press for installing a motor bearing according to claim 6, characterized in that: The front end of the flipping protection plate (404) is fixedly connected to the rear side of the flipping shaft (406). The left and right ends of the flipping shaft (406) are rotatably connected to the left and right sides inside the connecting frame (405). And a torsion spring is arranged at the rotational connection position of the flipping shaft (406) and the connecting frame (405). The connecting frame (405) is fixedly connected to the front side of a pressure table (9).

8. The press for installing a motor bearing according to claim 7, characterized in that: Both the left and right ends at the rear side of the connecting frame (405) are fixedly connected with extension arms (407). A limit shaft (408) is rotatably connected between the two extension arms (407). The limit shaft (408) horizontally penetrates through the middle of the movable arm (401).

9. A press for installing a motor bearing according to claim 3, characterized in that: A hole groove is arranged in the middle of the upper surface of the pressure table (9). A motor rotating shaft to be installed (7) is arranged inside the hole groove. A bearing ring (8) is arranged on the upper surface of the motor rotating shaft to be installed (7).

10. The press for installing a motor bearing according to claim 1, characterized in that: A hydraulic rod (5) is arranged on the lower surface of the pressure body (2). The fixed end of the hydraulic rod (5) is fixedly connected to the pressure body (2). The free end of the hydraulic rod (5) is fixedly connected to a bearing retaining ring (6).

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